Optical pulse repetition rate division using an optoelectronic oscillator

被引：0
|
作者：
Li, Ping [1 ]
Shao, Kunlin [1 ]
Zhang, Yamei [1 ]
Pan, Shilong [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Natl Key Lab Microwave Photon, Nanjing 210016, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2024年 / 22卷 / 04期
基金：
中国国家自然科学基金;
关键词：
frequency division; optoelectronic oscillator; mode-locked laser; microwave photonics;
D O I：
10.3788/COL202422.043902
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An approach for frequency division of an optical pulse train (OPT) based on an optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. When the OPT is injected into the OEO, a microwave signal with a frequency equaling fractional multiples of the repetition rate of the OPT is generated. This signal is then fed back to the OEO, maintaining its oscillation, while simultaneously serving as the control signal of a Mach-Zehnder modulator (MZM) in the OEO. The MZM acts as an optical switch, permitting specific pulses to pass through while blocking others. As a result, the repetition rate of the OPT is manipulated. A proof-of-concept experiment is carried out. Frequency division factors of 2 and 3 are successfully achieved. The phase noises of the OPT before and after the frequency division are investigated. Compared to previously reported systems, no external microwave source and sophisticated synchronization structure are needed.
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页数：5
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